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comparison src/share/vm/runtime/mutexLocker.cpp @ 6939:c284cf4781f0

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7127792: Add the ability to change an existing PeriodicTask's execution interval Summary: Enables dynamic enrollment / disenrollment from the PeriodicTasks in WatcherThread. Reviewed-by: dholmes, mgronlun
author rbackman
date Thu, 04 Oct 2012 14:55:57 +0200
parents da91efe96a93
children e522a00b91aa f34d701e952e
comparison
equal deleted inserted replaced
6938:8940ddc1036f 6939:c284cf4781f0
138 138
139 Monitor* JfrQuery_lock = NULL; 139 Monitor* JfrQuery_lock = NULL;
140 Monitor* JfrMsg_lock = NULL; 140 Monitor* JfrMsg_lock = NULL;
141 Mutex* JfrBuffer_lock = NULL; 141 Mutex* JfrBuffer_lock = NULL;
142 Mutex* JfrStream_lock = NULL; 142 Mutex* JfrStream_lock = NULL;
143 Monitor* PeriodicTask_lock = NULL;
143 144
144 #define MAX_NUM_MUTEX 128 145 #define MAX_NUM_MUTEX 128
145 static Monitor * _mutex_array[MAX_NUM_MUTEX]; 146 static Monitor * _mutex_array[MAX_NUM_MUTEX];
146 static int _num_mutex; 147 static int _num_mutex;
147 148
283 284
284 def(JfrQuery_lock , Monitor, nonleaf, true); // JFR locks, keep these in consecutive order 285 def(JfrQuery_lock , Monitor, nonleaf, true); // JFR locks, keep these in consecutive order
285 def(JfrMsg_lock , Monitor, nonleaf+2, true); 286 def(JfrMsg_lock , Monitor, nonleaf+2, true);
286 def(JfrBuffer_lock , Mutex, nonleaf+3, true); 287 def(JfrBuffer_lock , Mutex, nonleaf+3, true);
287 def(JfrStream_lock , Mutex, nonleaf+4, true); 288 def(JfrStream_lock , Mutex, nonleaf+4, true);
289 def(PeriodicTask_lock , Monitor, nonleaf+5, true);
288 } 290 }
289 291
290 GCMutexLocker::GCMutexLocker(Monitor * mutex) { 292 GCMutexLocker::GCMutexLocker(Monitor * mutex) {
291 if (SafepointSynchronize::is_at_safepoint()) { 293 if (SafepointSynchronize::is_at_safepoint()) {
292 _locked = false; 294 _locked = false;